SIVA – SPRINT Dogbone Foam Tag (M730)

The SIVA SPRINT Dogbone Foam Tag (M730) is a high-performance, foam-backed UHF RFID transponder designed specifically for race timing and athlete identification in marathons, ultramarathons, and sprint races.

Optimized for human-body proximity, the tag’s foam spacer minimizes detuning effects and ensures accurate, consistent read performance even when worn directly on a bib or garment. Each tag is tuned for maximum sensitivity and supplied in roll form for easy integration, with options for custom printing and pre-encoding to suit event branding and management systems.

Manufactured with Impinj Monza M730 IC technology, the Dogbone Foam Tag delivers reliable reads across global frequency bands, making it a trusted choice for professional timing systems used worldwide.

Specification

RF Specification

  • Mode of Operation: Passive UHF RFID transponder

  • Air Interface Protocol: EPCglobal Class 1 Gen 2 / ISO 18000-63

  • Operational Frequency: 860–960 MHz (Global)

  • IC Type: Impinj Monza M730

  • EPC Memory: 128 bits

  • Data Retention: Minimum 10 years

  • Write Endurance: 10,000 cycles

  • Read Range (2W ERP):

    • ETSI: Up to 16.5 m (54 ft)

    • FCC: Up to 14 m (46 ft)

  • Applicable Surfaces: Non-metallic (optimized for skin proximity)

Physical Specification

  • Face Stock: Foam

  • Label Size: 100 × 31.75 × 3.0 mm (3.93 × 1.25 × 0.11 in)

  • Adhesive: High-performance permanent adhesive

  • Delivery Format: Roll form (1,000 tags/roll; 2 rolls/carton)

  • Label Pitch: 31.75 mm (1.25 in)

  • Core Diameter: 76 mm (3 in)

  • Outer Diameter: 385 mm (15.15 in)

  • Weight: 0.973 g per label

Environmental Resistance

  • Operating Temperature: -40 °C to +85 °C

  • Adhesive Service Temperature: -20 °C to +85 °C

  • Application Temperature: +10 °C to +38 °C

  • Humidity Resistance: 95% at 60 °C (100 h), 50% at 80 °C (100 h)

  • Peak Temperature: +260 °C for 1 minute (no performance degradation)

  • Water Resistance: IP68 (5 h at 1 m depth)

  • Chemical Resistance: Resistant to solvents and moisture

  • Expected Lifetime: Multiple years in normal conditions

Personalization Options

  • Pre-Encoding: EPC or user memory with permanent or password lock

  • Custom Printing: Logos, barcodes, serial numbers, and event artwork available

Installation Guidelines

  • Ensure the surface is clean, dry, and even before application.

  • Avoid touching the adhesive side during mounting to ensure maximum bond strength .

Order Information

  • Part Number: RF.Li.TT.3FT.Dogbone.M730

  • Roll Size: 1,000 tags/roll, 2 rolls/carton

Benefits

Durable and Environmentally Resilient

Performs consistently across extreme temperatures, humidity, and water exposure with IP68-rated sealing.

Customizable and Easy to Deploy

Available with pre-encoding and event-specific printing, simplifying logistics for large-scale race events.

Optimized for Race Timing

Foam backing minimizes detuning effects caused by human body proximity, ensuring reliable and precise athlete timing.

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